Frost Dates for Ukiah, CA 95482
Last spring frost April 14 · First fall frost November 6 · 206 frost-free days · USDA Zone 9a
ZIP 95482 has about 33,200 people.
Long season: 206 frost-free days. Spring frost risk spans March 19–May 10 (52 days). Fall frost risk spans October 19–November 23 (35 days).
Frost probability for 95482
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 10 | April 14 | March 19 |
| Fall (first frost) | October 19 | November 6 | November 23 |
Dates come from NOAA 1971–2000 freeze probabilities at POTTER VALLEY POWERHOUSE (24.2 km away); the 50% date is the median year.
Which crops fit a 206-day season in Ukiah
In Ukiah (206 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Mar 10 | Apr 28–May 5 | 164 | fits: 80 days to maturity, 164 available after Apr 28. | Jul 7 |
| Pepper | Mar 3 | Apr 28–May 5 | 164 | fits: 75 days to maturity, 164 available after Apr 28. | Jul 12 |
| Lettuce | Feb 17 | Mar 17–Mar 24 | 241 | two-plantings: Plant Mar 17 and again by Sep 15; both mature before Nov 13. | Sep 15 |
| Carrots | — | Mar 24–Mar 31 | 248 | fits: 70 days to maturity, 248 available after Mar 24. | Sep 4 |
| Cucumber | Mar 24 | Apr 28–May 5 | 178 | two-plantings: Plant Apr 28 and again by Aug 10; both mature before Oct 23. | Aug 10 |
| Beans | — | Apr 21–May 5 | 192 | two-plantings: Plant Apr 21 and again by Aug 17; both mature before Oct 30. | Aug 17 |
| Peas | — | Feb 17–Apr 28 | 269 | fits: 65 days to maturity, 269 available after Feb 17. | Aug 26 |
| Zucchini | Mar 31 | Apr 28–May 5 | 178 | two-plantings: Plant Apr 28 and again by Aug 15; both mature before Oct 23. | Aug 15 |
| Onion | Jan 20 | Mar 17–Mar 31 | 241 | fits: 100 days to maturity, 241 available after Mar 17. | — |
| Spinach | — | Feb 17–Apr 7 | 283 | two-plantings: Plant Feb 17 and again by Oct 4; both mature before Nov 27. | Oct 4 |
| Kale | Feb 3 | Mar 17–Mar 31 | 255 | two-plantings: Plant Mar 17 and again by Sep 19; both mature before Nov 27. | Sep 19 |
| Broccoli | Feb 17 | Mar 17–Mar 31 | 241 | fits: 80 days to maturity, 241 available after Mar 17. | Aug 11 |
| Cabbage | Feb 17 | Mar 17–Mar 31 | 255 | fits: 70 days to maturity, 255 available after Mar 17. | Sep 4 |
| Radish | — | Feb 17–May 12 | 269 | two-plantings: Plant Feb 17 and again by Oct 5; both mature before Nov 13. | Oct 5 |
| Beets | — | Feb 17–May 12 | 269 | two-plantings: Plant Feb 17 and again by Sep 5; both mature before Nov 13. | Sep 5 |
| Potatoes | — | Mar 31–Apr 7 | 227 | fits: 90 days to maturity, 227 available after Mar 31. | — |
| Garlic | — | Nov 6 | 311 | overwinter: Plant Nov 6 to Nov 27; harvest the following summer. | Nov 27 |
| Strawberry | — | Mar 10–May 5 | 262 | perennial: A perennial: plant Mar 10; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 17 | Apr 21–Apr 28 | 178 | fits: 75 days to maturity, 178 available after Apr 21. | Jul 19 |
| Pumpkin | Mar 31 | Apr 28–Apr 28 | 171 | fits: 100 days to maturity, 171 available after Apr 28. | Jun 24 |
| Cauliflower | Mar 3 | Apr 7–Apr 21 | 220 | fits: 75 days to maturity, 220 available after Apr 7. | Aug 16 |
| Swiss Chard | Feb 17 | Mar 31–Mar 31 | 227 | two-plantings: Plant Mar 31 and again by Sep 5; both mature before Nov 13. | Sep 5 |
| Arugula | — | Feb 17–May 12 | 283 | two-plantings: Plant Feb 17 and again by Oct 4; both mature before Nov 27. | Oct 4 |
| Brussel Sprouts | Feb 17 | Mar 17–Mar 31 | 255 | fits: 100 days to maturity, 255 available after Mar 17. | Aug 5 |
| Butternut Squash | Mar 31 | Apr 28–May 5 | 171 | fits: 100 days to maturity, 171 available after Apr 28. | Jun 24 |
| Eggplant | Feb 24 | Apr 28–May 5 | 164 | fits: 70 days to maturity, 164 available after Apr 28. | Jul 17 |
| Okra | Mar 17 | Apr 21–Apr 28 | 185 | two-plantings: Plant Apr 21 and again by Aug 15; both mature before Oct 23. | Aug 15 |
| Basil | Mar 10 | May 5–May 5 | 171 | two-plantings: Plant May 5 and again by Aug 10; both mature before Oct 23. | Aug 10 |
| Cilantro | — | Mar 17–Apr 7 | 241 | two-plantings: Plant Mar 17 and again by Sep 10; both mature before Nov 13. | Sep 10 |
| Parsley | Feb 3 | Apr 21–Apr 28 | 206 | fits: 70 days to maturity, 206 available after Apr 21. | Aug 21 |
| Celery | Feb 3 | Apr 21–May 5 | 206 | fits: 120 days to maturity, 206 available after Apr 21. | Jul 2 |
| Scallions | Feb 3 | Mar 17–Mar 31 | 255 | two-plantings: Plant Mar 17 and again by Sep 14; both mature before Nov 27. | Sep 14 |
| Turnip | — | Mar 17–Mar 31 | 255 | two-plantings: Plant Mar 17 and again by Sep 24; both mature before Nov 27. | Sep 24 |
| Kohlrabi | — | Mar 3–Mar 17 | 269 | two-plantings: Plant Mar 3 and again by Sep 19; both mature before Nov 27. | Sep 19 |
| Bok Choy | Mar 17 | Apr 7–Apr 14 | 220 | two-plantings: Plant Apr 7 and again by Sep 15; both mature before Nov 13. | Sep 15 |
| Collards | Feb 3 | Mar 17–Mar 31 | 255 | two-plantings: Plant Mar 17 and again by Sep 14; both mature before Nov 27. | Sep 14 |
| Cantaloupe | Mar 31 | Apr 28–May 5 | 164 | fits: 85 days to maturity, 164 available after Apr 28. | Jul 2 |
| Chives | Jan 20 | Apr 21–Apr 28 | 220 | fits: 90 days to maturity, 220 available after Apr 21. | — |
| Dill | — | Feb 17–May 12 | 269 | two-plantings: Plant Feb 17 and again by Sep 5; both mature before Nov 13. | Sep 5 |
| Oregano | Feb 3 | Apr 21–Apr 28 | 220 | fits: 80 days to maturity, 220 available after Apr 21. | — |
| Rosemary | Jan 20 | Apr 21–Apr 28 | 206 | fits: 80 days to maturity, 206 available after Apr 21. | — |
| Sage | Feb 17 | Apr 21–Apr 28 | 220 | fits: 75 days to maturity, 220 available after Apr 21. | — |
| Thyme | Feb 3 | Apr 21–Apr 28 | 220 | fits: 90 days to maturity, 220 available after Apr 21. | — |
| Calendula | Mar 3 | Mar 31–Apr 14 | 227 | two-plantings: Plant Mar 31 and again by Sep 10; both mature before Nov 13. | Sep 10 |
| Cosmos | Mar 17 | Apr 14–Apr 28 | 192 | two-plantings: Plant Apr 14 and again by Aug 10; both mature before Oct 23. | Aug 10 |
| Lavender | Jan 20 | Apr 14–Apr 28 | 227 | fits: 90 days to maturity, 227 available after Apr 14. | — |
| Marigolds | Mar 3 | Apr 14–Apr 21 | 192 | two-plantings: Plant Apr 14 and again by Aug 20; both mature before Oct 23. | Aug 20 |
| Melons | Mar 31 | Apr 28–May 5 | 164 | fits: 85 days to maturity, 164 available after Apr 28. | Jul 2 |
| Mint | — | Apr 14–Apr 28 | 227 | fits: 90 days to maturity, 227 available after Apr 14. | — |
| Nasturtiums | Mar 17 | Apr 14–Apr 21 | 192 | two-plantings: Plant Apr 14 and again by Aug 15; both mature before Oct 23. | Aug 15 |
| Pole Beans | — | Apr 21–May 5 | 185 | fits: 65 days to maturity, 185 available after Apr 21. | Aug 5 |
| Spaghetti Squash | Mar 31 | Apr 28–May 5 | 171 | fits: 90 days to maturity, 171 available after Apr 28. | Jul 4 |
| Sunflowers | — | Apr 14–Apr 28 | 192 | fits: 70 days to maturity, 192 available after Apr 14. | Jul 31 |
| Tomatillos | Feb 17 | Apr 21–Apr 28 | 171 | fits: 75 days to maturity, 171 available after Apr 21. | Jul 12 |
| Watermelon | Mar 31 | Apr 21–Apr 28 | 171 | fits: 80 days to maturity, 171 available after Apr 21. | Jul 7 |
| Yellow Squash | Mar 31 | Apr 28–May 5 | 178 | two-plantings: Plant Apr 28 and again by Aug 15; both mature before Oct 23. | Aug 15 |
| Zinnias | Mar 17 | Apr 14–Apr 28 | 192 | two-plantings: Plant Apr 14 and again by Aug 10; both mature before Oct 23. | Aug 10 |
Month by month in Ukiah
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 20), Lavender (Jan 20), Onion (Jan 20), Rosemary (Jan 20). |
| February | Start indoors: Celery (Feb 3), Collards (Feb 3), Kale (Feb 3), Oregano (Feb 3), Parsley (Feb 3), Scallions (Feb 3), +9 more. Direct sow from: Arugula (Feb 17), Beets (Feb 17), Dill (Feb 17), Peas (Feb 17), Radish (Feb 17), Spinach (Feb 17). |
| March | Start indoors: Calendula (Mar 3), Cauliflower (Mar 3), Marigolds (Mar 3), Pepper (Mar 3), Basil (Mar 10), Tomato (Mar 10), +15 more. Direct sow from: Kohlrabi (Mar 3), Cilantro (Mar 17), Turnip (Mar 17), Carrots (Mar 24), Potatoes (Mar 31). Transplant from: Broccoli (Mar 17), Brussel Sprouts (Mar 17), Cabbage (Mar 17), Collards (Mar 17), Kale (Mar 17), Lettuce (Mar 17), +4 more. Plant: Strawberry (Mar 10). |
| April | Direct sow from: Sunflowers (Apr 14), Beans (Apr 21), Pole Beans (Apr 21). Transplant from: Bok Choy (Apr 7), Cauliflower (Apr 7), Cosmos (Apr 14), Lavender (Apr 14), Marigolds (Apr 14), Mint (Apr 14), +24 more. Last frost around April 14. |
| May | Transplant from: Basil (May 5). |
| June | Last sowing dates: Butternut Squash (Jun 24), Pumpkin (Jun 24). |
| July | Last sowing dates: Cantaloupe (Jul 2), Celery (Jul 2), Melons (Jul 2), Spaghetti Squash (Jul 4), Tomato (Jul 7), Watermelon (Jul 7), +5 more. |
| August | Last sowing dates: Brussel Sprouts (Aug 5), Pole Beans (Aug 5), Basil (Aug 10), Cosmos (Aug 10), Cucumber (Aug 10), Zinnias (Aug 10), +10 more. |
| September | Last sowing dates: Cabbage (Sep 4), Carrots (Sep 4), Beets (Sep 5), Dill (Sep 5), Swiss Chard (Sep 5), Calendula (Sep 10), +8 more. |
| October | Last sowing dates: Arugula (Oct 4), Spinach (Oct 4), Radish (Oct 5). |
| November | Direct sow from: Garlic (Nov 6). First frost around November 6. Last sowing dates: Garlic (Nov 27). |
| December | Harvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year. |
Frequently Asked Questions
What is the last frost date for Ukiah, CA (ZIP 95482)?
The median last spring frost date for Ukiah, CA (ZIP code 95482) is around April 14. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before March 19; one in ten it runs past May 10.
What is the first fall frost date in Ukiah, CA?
The median first fall frost date for Ukiah, CA is around November 6. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around October 19 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Ukiah, CA?
The frost-free growing season in Ukiah is about 206 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Ukiah (206 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Ukiah, CA?
Ukiah, CA is in USDA hardiness zone 9a (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Ukiah, CA?
Start tomatoes indoors Mar 10 and plant out Apr 28 in Ukiah. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Ukiah?
Two: plant Mar 17 and again by Sep 15; both mature before Nov 13.
When do I plant garlic in Ukiah?
Nov 6 to Nov 27; it overwinters and is ready the following summer.
Can I get two tomato crops in Ukiah?
Yes: plant out Apr 28 for a summer crop, and set out a second round of transplants by Jul 7 for a fall crop.
Which nearby ZIP has a longer season?
Lakeport (ZIP 95453) has 243 frost-free days, 37 more than Ukiah (ZIP 95482). See Lakeport ZIP 95453 frost dates
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